Electric heating-pad for carbureters, &amp;c.



R. H. HUMITSCH- ELECTRIC HEATING PAD FOR CARBURETERS,&0. APPLICATIONFILED FEB. 14. 1911.

1,236,440. Patented Aug. 14,1917.

2 SHEETSSHEET I.

O o o WWW avwewtoz fi/ff/wv/rscw R. H. HUMITSCH.

ELECTRIC HEATING PAD FOR CARBURETERS,&c.

APPLICATION FILED FEB. 14. I917.

Patented Aug. 14, 1917.

2 SHEETSSHEET 2.

GHQ Mau RICHARD H. nonrrscn, or CLEVELAND, orrro.

ELECTRIC HEATING-PAD FOR CARBURETERS, 800.

Specification of Letters Patent.

Patented Aug. 14 1917.

Application filed February 14, 1917. Serial No. 148,485.

To all whom it may concern.

Be it known that I, RICHARD H. HUMITSCH,

a citizen of the United States, residing at Cleveland, in the county ofCuyahoga and State of Ohio, have invented certain new and usefulImprovements in Electric Heating-Pads for Carbureters, &c.. of which thefollowing is a specification.

This invention. relates to electric heaters for carbureters, and has forits object to provide an improved device which can be quickly and easilyapplied to a carbureter for the purpose of heating the same andassisting vaporization therein, and it will be found particularlyserviceable on carbureters using low grade hydro-carbons.

The heater comprises a band or pad adapted to be mounted on acarbureter, and it may be used on either the float chamber or the mixingchamber.

In the accompanying drawings- Figure 1 is a side elevation showing theheater applied to the float chamber of a carbureter.

Fig. 2 is a section on the line 2-2 of Fig. 1.

Fig. 3 is a detail in horizontal section of the heater.

Fig. 4 is a detail in vertical section thereof.

Fig. 5 is a diagram plan showing the wiring in the heater.

Fig. 6 is a top view of a modification, the pad extending only part wayaround the chamber.

Fi 7 is a fied orm.

Fig. 8 is a detail in perspective of the wire holder or frame shown inFig. 7.-

The heater comprises a pad or band which is somewhat flexible, so thatit may be placed around the float chamber of a carbureter as shown inFigs. 1 and 6. The pad comprises an outer layer or piece of asbestos 1,an intermediate layer of mica 2 and an inner layer of mica 6. The layers1 and 2 are clamped together by channeled binding or edge strips 3,which extend along the upper and lower edges of the layers, and theinner flanges of these strips are provided with hooks 4. The insulatedwire 5 is strung back and forth between these hooks, and is detail ofthe wiring in a modiinclosed between the mica layers 2 and .6. All partsare held together by edge binding strips 7 under which are strips ofasbestos 8. The terminals 9 of the pad wire are connected by wires 10and 11 to a battery 12, with a switch 13 in the circuit.

This pad is placed around the float or other chamber of the carbureterand will serve to heat the walls thereof. It may extend completelyaround the same, where conditions permit, as shown in Figs. 1 and 2, orpartly around the same as shown in Fig. 6, and the pad is held in placeby a flat spring clip 16.

In the modification shown in Figs. 7 and 8, the wire 5, instead of beingstrung over hooks 0n the edge strips, is strung back and forth betweennotches 15 in the edges of a plate or layer 14 of asbestos, which isinclosed between protective layers of mica as in the construction abovedescribed.

It will be appreciated that this heating pad can readily be applied toan existing carbureter, and will then serve to heat the walls of thefloat or mixing chambers and assist in the vaporization of the oil whenthe current is turned on. The device has the advantage that a specialconstruction of layer of electric insulating material, said wire beinginclosed between the said intermediate and inner layers.

2. An electric heating pad for carbureters, comprising layers ofinsulating material, a heating wire confined between the same, an outerlayer of heat insulating material, and edge strips clamped over theedges and confining the margins of said layers.

In testimony whereof, I. do aflix my signature in presence of twowitnesses.

RICHARD... H. HUMITSOH.

Witnesses:

J OHN A. BOMMHARDT, G. W. Rosnnnnno.

